<template>
    <panel-head :route="route" />
    <div class="btn">
        <el-button :icon="Plus" type="primary" size="small" @click="open(null)">新增</el-button>
    </div>
    <el-table :data="tableData.list" style="width: 100%;">
        <el-table-column prop="id" label="id" />
        <el-table-column prop="name" label="昵称" />
        <el-table-column prop="permissionName" label="菜单权限" width="500px" />
        <el-table-column label="操作">
            <template #default="scope">
                <el-button type="primary" @click="open(scope.row)">编辑</el-button>
            </template>
        </el-table-column>
    </el-table>
    <div class="pagination-info">
        <el-pagination
            v-model:current-page="paginationData.pageNum"
            :page-size="paginationData.pageSize"
            size="small"
            :background="false"
            layout="total, prev, pager, next"
            :total="tableData.total"
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
        />
    </div>
    
    <el-dialog 
        v-model="dialogFormVisable" 
        :before-close="beforeClose"
        title="添加权限"
        width="500"
    >
        <el-form
            ref="formRef"
            label-width="100"
            label-position="left"
            :model="form"
            :rules="rules"
        >
            <el-form-item v-show="false" prop="id">
                <el-input v-model="form.id" />
            </el-form-item>
            <el-form-item label="名称" prop="name">
                <el-input v-model="form.name" placeholder="请填写权限名称" />
            </el-form-item>
            <el-form-item label="权限" prop="permissions">
                <el-tree 
                    ref="treeRef"
                    style="max-width: 600px;" 
                    :data="permissionData" 
                    node-key="id" 
                    show-checkbox
                    :default-checked-keys="defaultKeys"
                    :default-expanded-keys="[2]" 
                />
            </el-form-item>
        </el-form>
        <template #footer>
            <div class="dialog-footer">
                <el-button type="primary" @click.prevent="confirm(formRef)">确认</el-button>
            </div>
        </template>
    </el-dialog>
</template>
<script setup>
import { ref, reactive, onMounted, nextTick } from 'vue'
import { useRoute } from 'vue-router'
import { Plus } from '@element-plus/icons-vue'
import { userGetMenu, userSetMenu, menuList } from '@/api'

const route = useRoute()
const formRef = ref()
const treeRef = ref()
const defaultKeys = [4, 5]

onMounted(() => {
    //菜单数据
    userGetMenu().then(({data}) => {
        permissionData.value = data.data
    })
    getListData()
})
// 打开弹窗
const open = (rowData = {}) => {
    dialogFormVisable.value = true
    //弹窗打开form生成是异步的
    nextTick(() => {
        if(rowData) {
            Object.assign(form, {id:rowData.id, name:rowData.name})
            treeRef.value.setCheckedKeys(rowData.permission)
        }
    })

}
const paginationData = reactive({
    pageNum:1,
    pageSize:10
})
// 列表数据
const tableData = reactive({
    list:[],
    total:0
})
const handleSizeChange = (val) => {
    paginationData.pageSize = val
    getListData()
}
const handleCurrentChange = (val) => {
    paginationData.pageNum = val
    getListData()
}
// 请求列表数据
const getListData = () => {
    menuList(paginationData).then(({ data }) => {
        const { list, total } = data.data
        tableData.list = list
        tableData.total = total
    })
}
const form = reactive({
    id:'',
    name: '',
    permissions:''
})
const rules = reactive({
    name: [{required: true, trigger:'blur', message:'请输入权限名称'}]
})
// 表单提交
const confirm = async (formEl) => {
    if(!formEl) return
    await formEl.validate((valid, fields) => {
        if(valid){
            // 获取到选择的checkbox数据
            const permissions = JSON.stringify(treeRef.value.getCheckedKeys())
            userSetMenu({ name:form.name, permissions, id:form.id }).then(({ data }) => {
                beforeClose()
                getListData()
            })
        } else {
            console.log('error submit!', fields)
        }
    })
}
// 树形菜单权限数据
const permissionData = ref([])

//弹窗的显示隐藏
const dialogFormVisable = ref(false)
// 关闭弹窗的回调
const beforeClose = () => {
    dialogFormVisable.value = false
    //重置表单
    formRef.value.resetFields()
    // tree选择重置
    treeRef.value.setCheckedKeys(defaultKeys)
}
</script>
<style lang="scss" scoped>
.pagination-info{
    display: flex;
    justify-content: flex-end;
}
.btn{
    padding: 10px 0 10px 10px;
    background-color: #fff;
}
</style>